I have taken the nurturing farther than most men would and have been a stay at home dad for almost a decade now.(of course I get to run a lot). You will probably regret these sacrifices, sometimes. I do have some passive income and my wife works, so we have about the same income as you will for all of us. It's probably kind of the same deal if you consider what my wife needs to spend on herself vs. your alimony. House is very little expense for us and I made it that way as a safety factor for going unemployed. In this life you can crash from any place, so I prefer to relax more, but be responsible at the same time.
Our kids are doing great. Really great. We have very little extended family , so that is a big factor. if not for our on hands care it would be all 6 to 6. Kids thrive off of family. While I am a serious parent , I do get quite a bit of social satisfaction from being involved with my kids and the people around their activities, school, sports, clubs, and I never got the same from any group of co-workers.
You will see people around you spending all that money you are not. Sometimes that sucks, but overall I wouldn't trade it. We still vacation every year and can do our fair share at fund raisers for school and what not. kids all go to 6th grade camp , DC trips and the like. One kid plays club soccer and we have enough for everyone to participate reasonably in hobbies. It is not bad not to spoil your kids. Mine has done mountain biking races where all the kids have 5k bikes on his $700 build, and it has been fine. The main things get done. Saving for retirement can be scary. I think some people really want as much money for that as they can possibly get for that because they can imagine living frugally ever , so that's something to consider. To each his own.
On the other hand, I think our college costs are going to be less due to academic success, which is certainly tied to dedicated parenting. It's seems pretty likely that all our kids will launch pretty well and we won't be faced with supporting them or watching them be destitute until I die. That stuff is worth a lot. I have neighbors who were very successful but can't keep up their own formally very nice home due to bailing out grown kids.